Stretcher bar frame



FIG. 1 is a perspective view of a stretcher bar frame, showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged left-side elevational view of FIG. 2; and,

FIG. 9 is an enlarged right-side elevational view of FIG. 2.

The broken lines in FIG. 1 depict environment and form no part of the claimed design. The dash dot lines in the figures depict boundary lines of the design. The additional broken lines shown in the figures represent portions of the stretcher bar frame, which form no part of the claimed design. 

CLAIM I claim the ornamental design for a stretcher bar frame, as shown and described. 